Question

7 which is the lon formed when
h+ ion combined with water molecules​

Answer 1

It can be formed when an acid is present in water or simply in pure water. It's chemical formula is H3O+. It can also be formed by the combination of a H+ ion with an H2O molecule. The hydronium ion has a trigonal pyramidal geometry and is composed of three hydrogen atoms and one oxygen atom.

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Answer 2

Answer:

A hydrogen ion cannot exist on its own, so it combines with a water molecule to form a hydronium ion.